#ifndef cciWeakReference_h
#define cciWeakReference_h
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the Mozilla browser.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications, Inc.
 * Portions created by the Initial Developer are Copyright (C) 1999
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Scott Collins <scc@netscape.com>
 *   David Marteau (CCI implementation)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

// cciWeakReference.h

#include "cciIWeakReference.h"

class cciWeakReference;

class CCI_COM_GLUE cciSupportsWeakReference : public cciISupportsWeakReference
  {
    public:
      cciSupportsWeakReference()
          : mProxy(0)
        {
          // nothing else to do here
        }

      CCI_DECL_ISUPPORTSWEAKREFERENCE

    protected:
      inline ~cciSupportsWeakReference();

    private:
      friend class cciWeakReference;

      void
      NoticeProxyDestruction()
          // ...called (only) by an |cciWeakReference| from _its_ dtor.
        {
          mProxy = 0;
        }

      cciWeakReference* mProxy;

    protected:

      void ClearWeakReferences();
      bool HasWeakReferences() const {return mProxy != 0;}
  };

inline
cciSupportsWeakReference::~cciSupportsWeakReference()
  {
    ClearWeakReferences();
  }

#endif // cciWeakReference_h
